Provide empty image when no video is present on QR +PIN auth, Fixes AB#3019283

changelog.txt

@@ -1,3 +1,7 @@
+V.Next
+---------
+- [PATCH] Provide empty image when no video is present on QR +PIN auth (#2424)
+
 Version 18.1.0
 ----------
 (common4j 15.1.0)

common/src/main/java/com/microsoft/identity/common/internal/providers/oauth2/WebViewAuthorizationFragment.java

@@ -27,6 +27,7 @@
 import android.app.AlertDialog;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -300,6 +301,17 @@ public void onPermissionRequest(final PermissionRequest request) {
                 }
 
             }
+
+            @Override
+            public Bitmap getDefaultVideoPoster() {
+                // When not playing, video elements are represented by a 'poster' image.
+                // The image to use can be specified by the poster attribute of the video tag in HTML.
+                // If the attribute is absent, then a default poster will be used.
+                // This method allows the ChromeClient to provide that default image.
+                // On our case when an invalid QR code is provided,  we will return a 10x10 empty image.
+                // Instead of the default grey playback image. #2424
+                return Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
+            }
         });
     }